Mayor Doug Diny of Wausau, Wisconsin posted photo to social media showing himself removing an empty voting drop drop box, leading Marathon County District Attorney Theresa Wetzsteon to threaten him with investigation.

Wausau Mayor Doug Diny put on work gloves, donned a hard hat and used a dolly to cart away a drop box outside City Hall. The move is the latest example in swing state Wisconsin of the fight over whether communities will allow absentee ballot drop boxes.

The mayor of the central Wisconsin city of Wausau hauled away a ballot drop box, an action that has angered some local residents. Mayor Doug Diny posed for a photo sporting a hard hat and work gloves as he wheeled away the city’s only ballot drop box outside City Hall.